Lesheng Chen

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Yueqing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Preparation method of electrical contact material
- Patent number 10,099,286
- Issue date Oct 16, 2018
- Wenzhou Hongfeng Electrical Alloy Co., Ltd.
- Lesheng Chen
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of preparing silver-based oxide electrical contact materials...
- Patent number 9,761,342
- Issue date Sep 12, 2017
- Wenzhou Hongfeng Electrical Alloy Co., Ltd.
- Lesheng Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of preparing silver-based electrical contact materials with...
- Patent number 9,437,998
- Issue date Sep 6, 2016
- Wenzhou Hongfeng Electrical Alloy Co., Ltd.
- Lesheng Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of preparing Ag-based oxide contact materials with direction...
- Patent number 9,293,270
- Issue date Mar 22, 2016
- Wenzhou Hongfeng Electrical Alloy Co., Ltd.
- Lesheng Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of preparing silver-based electrical contact materials with...
- Patent number 9,287,018
- Issue date Mar 15, 2016
- Wenzhou Hongfeng Electrical Alloy Co., Ltd.
- Lesheng Chen
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
Preparation Method of Electrical Contact Material
- Publication number 20160074935
- Publication date Mar 17, 2016
- WENZHOU HONGFENG ELECTRICAL ALLOY CO., LTD.
- Lesheng Chen
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Method of Preparing Silver-Based Electrical Contact Materials with...
- Publication number 20130313488
- Publication date Nov 28, 2013
- Lesheng Chen
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Method of Preparing Silver-Based Electrical Contact Materials with...
- Publication number 20130277894
- Publication date Oct 24, 2013
- Lesheng Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Method of Preparing Silver-Based Oxide Electrical Contact Materials...
- Publication number 20130266468
- Publication date Oct 10, 2013
- Lesheng Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Method of preparing Ag- based oxide contact materials with directio...
- Publication number 20130266791
- Publication date Oct 10, 2013
- WENZHOU HONGFENG ELECTRICAL ALLOY CO., LTD.
- Lesheng Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...